Jan Bors (Czech HoD) in a post on his personal Facebook profile:
"Eurovision is changing very rapidly and we can boldly say that with the Czech Republic we are starting to set a trend. This year will be no different. We have incredibly good songs that many countries will envy. I am absolutely convinced of that."
Remember last year he said we would have one of the best national finals of the season this year. In other words: We can wait for new "Space Sushi".
I believe he said this in an interview for a magazine so he's probably doing it to make more Czechs interested in the national final&Eurovision...
In the interview, he also mentioned that there will be 8 songs and that there are male artists, female artists and a band. All of them are also rather young. Majority of the songs are mainstream even though with different tempo and sound. One song is "something completely different" (I believe that that could be the Vesna song if nofuxCZ is right and they applied).
Right now they are working on turning the demo versions into proper songs and on preparing the NF and the performances. It seems it will be a typical NF with 6 people maximum on stage, international juries, special interval acts etc. They already put a lot of attention to choreography and so on so I wouldn't be surprised if the performance we'll see in the NF would be very similar to the actual Eurovision performance.
Jan Bors also talked about the voting rules which they are discussing at the moment. He mentioned that he is intrigued by the concept of voters having to vote for exactly three entries so that they would have to listen to all the songs but he isn't sure if it's even possible in terms of technology. Personally, I'm glad they are discussing the voting in this way because it shows that they are aware of the problematic aspects from last year's voting.